Room Relative Humidity & Temperature Sensor (FW04 / FTW04 Series)
An industrial-grade surface-mounted indoor room relative humidity and temperature sensor series designed for environmental monitoring and building automation. Utilizing a highly accurate capacitive humidity sensor core alongside active 0-10V, 4-20mA, or passive resistance outputs, it offers a reliable, low-profile microclimate auditing solution housed inside a white flame-retardant ABS enclosure.
Key Highlights
- Dual Climate Room Sensing: Natively integrates relative humidity and temperature detection maps inside a single room device.
- Capacitive Relative Humidity Core: Employs high-durability capacitive sensing elements for absolute trace stability.
- Flexible Active Output Mapping: Provides selectable linear active signals including 0-10V or 4-20mA loop configurations.
- Integrated Setpoint Adjustment Option: Features built-in hardware potentiometers for local room parameter configuration overrides.
- Centralized Safety Low Voltage Build: Fully optimized for standard Safety Extra-Low Voltage (SELV) facility installations.
Product Overview
The hardware functions as a professional surface-mounted indoor room humidity and temperature sensor explicitly engineered to deliver real-time ambient microclimate auditing and HVAC environmental logging across modern office facilities and commercial buildings. It incorporates an advanced capacitive relative humidity tracking core operating across a baseline working scale of 0 to 100% RH with a precise measurement tolerance of ±2% RH within standard mid-range bands, operating alongside multi-variant thermal sensing configurations to capture room air metrics accurately. Depending on the model variation selected, the device is configured to translate environmental data over active linear signals including 0-10V active voltage circuits or 4-20mA current loops, or it can function as a passive resistance thermistor node matching common industry profiles.
Built with an internal design optimized for Safety Extra-Low Voltage (SELV) circuit lines, the wireless-free hardware supports optional physical local overrides via an integrated setpoint adjustment potentiometer supporting multi-scale resistance variables. Encased in a discrete white IP20-rated ABS plastic enclosure measuring similar to standard electrical switch boxes, the sensor mounts cleanly onto smooth walls or flush-mounted junction boxes using a pluggable terminal strip designed for multi-conductor screw links up to 1.5mm², ensuring long-term thermal monitoring stability without uncontrolled drafts skewing raw ambient data.
Key Features & Capabilities
Enterprise-grade technology designed for mission-critical operations
Versatile Multi Variant Architecture
Available in active voltage tracking (Type V/VV), active current loops (Type A/AS), passive thermistor layouts, or smart network configurations (Type LON).
Granular Local Hardware Elements
Can be outfitted with physical manual setpoint adjustment potentiometers (1k?, 5k?, or 10k? options) to allow precise user workspace microclimate overrides.
Proactive Mold and Moisture Defense
Engineered for centralized climate controls to continuous trace ambient humidity levels, maintaining stable building envelopes to completely block mold generation.
Frictionless Terminal Block Linkages
Features robust multi-conductor screw terminal blocks supporting wires up to 1.5mm for secure, stable electrical connectivity.
Centralized Ceiling or Wall Mounting
Housed inside a discrete cream-white enclosure designed to mount cleanly onto flat structural walls or standard flush-mounted electrical junction boxes.
Technical Specifications
Key technical details and performance specifications
| Specification | Details |
|---|---|
| Product Type | Room Humidity and Temperature Sensor Series |
| Model Architecture | FW04 Series (Humidity Only) / FTW04 Series (Humidity & Temperature) |
| Model Variant Types | Type V/VV (0-10V active), Type A/AS (4-20mA active), Type VS (0-10V humidity, passive temperature), Type LON (FTT10 active network) |
| Humidity Operating Sensor Principle | Capacitive |
| Humidity Measuring Spectrum Range | 5...95% RH (Working operational scale: 0...100% RH) |
| Humidity Measuring Accuracy | Typical ±2% RH within the 35% RH to 75% RH tracking band at 21°C |
| Active Voltage Output (Type V/VV/VS) | 0...10 V, minimum load impedance 10 k? (Type V/VV) or 5 k? (Type VS) |
| Active Current Output (Type A/AS) | 4...20 mA, maximum loop load impedance 800 ? |
| Temperature Measuring Range (Active) | 0°C ~ +50°C (Available on Type VV, Type VS, and Type LON models) |
| Temperature Measuring Range (Passive) | Dependent strictly on the thermistor component ordered by the customer (e.g., Pt100, Pt1000, Ni1000, NTC) |
| Temperature Tracking Accuracy (Active) | ± 1% of the total measuring range window (Type V/VV/VS) \| Typ. 0.5K (Type LON) |
| Temperature Passive Measuring Current | Typical < 1 mA (To counteract and prevent hardware self-heating anomalies) |
| Wired Electrical Clamps | Multi-conductor screw terminal strip, maximum cross-section 1.5mm. |
| Operating Supply Voltage (Type V/VV/VS/LON) | 15-24 VDC (±10%) or 24 VAC (±10%) |
| Power Consumption Baseline (Type V/VV) | Maximum 12mA / 24VDC |
| Power Consumption Baseline (Type VS) | Maximum 6mA / 24VDC |
| Power Consumption Baseline (Type A) | Maximum 40mA / 24VDC |
| Power Consumption Baseline (Type AS) | Maximum 20mA / 24VDC |
| Power Consumption Baseline (Type LON) | Typical 0.7W / 1.9VA (Maximum 40mA / 24VDC) |
| Optional Local Hardware Controls | Setpoint adjustment potentiometer: 1k? / 5k? / 10k? options (Tolerance ±5%, maximum load 0.25W, 3-wire connection) |
| Electrical Safety Classification | Designed for Safety Extra-Low Voltage (SELV) circuit lines |
| Chassis Ingress Protection Class | Connection head rated at IP20 |
| Housing Composition Material & Color | ABS Plastic, White (similar to RAL9010) |
| Physical Hardware Net Weights | FW04 V / FTW04 VV: 95g; FTW04 LON: 105g |
| Operating Environmental Temperature Ceiling | Tmax < 60°C |
| Installation Mounting Profiles | Surface mounting directly onto flat walls or flush-mounted junction boxes using rawl plugs and screws |
| Product Standards & Directives | Product Safety: EN60730-1 (Automatic electrical control devices for domestic use); EMC: EN60730-1 (Interference resistance); CE-Conformity: 89/336/EWG |
| Environmental Compliance | RoHS |
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